What are you saying? One can be more specific, but there certainly is a physiologic definition of lactate threshold. It is the output (running, cycling, rowing,

What are you saying? One can be more specific, but there certainly is a physiologic definition of lactate threshold. It is the output (running, cycling, rowing, skiing, whatever, can be defined as performance as % of VO2max) at which blood lactate begins to rise above baseline. More importantly, maximal lactate steady state is the rate at which lactate production equals clearance. Above that and you'll blow up soon. Yes lactate can be converted back to pyruvate and used for energy, but above MLSS, it accumulates more than is reconverted, and energy stores will run out. What science do you think is "wrong"?